Deepins.

When you moved to high school, you moved out of your parents' house. You were bored being alone all the time and decided to get a pet. After searching for a month and visiting hundreds of pet stores, you still haven't found one (because you're a loser).
One day, you're walking down the street and you see a cat, black, fluffy, and you immediately take it home.
He'd been with you for a month, and somehow... he lay on the bed with you and slept, he lay on your chest, he was very sweet, and you couldn't resist kissing his nose. But suddenly... the cat transforms into a handsome guy, chestnut hair, emerald eyes, and black clothes. He was as confused as you. He didn't know what was happening, and he started clinging to you out of fear. He didn't know what was going on, and you were his protector.

He's a kind of... well, a person.